asinh
(PHP 4 >= 4.1.0, PHP 5)
asinh -- Inverse hyperbolic sine
Description
float
asinh ( float arg )
Returns the inverse hyperbolic sine of
arg, i.e. the value whose
hyperbolic sine is arg.
Note: This function is not
implemented on Windows platforms.
Parameters
arg
The argument to process
Return Values
The inverse hyperbolic sine of arg